ClpQuadraticObjective Class Reference

Quadratic Objective Class. More...

#include <ClpQuadraticObjective.hpp>

Inheritance diagram for ClpQuadraticObjective:

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Collaboration diagram for ClpQuadraticObjective:

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List of all members.

Public Member Functions
Stuff

virtual double *	gradient (const ClpSimplex model, const double solution, double &offset, bool refresh, int includeLinear=2)
	Returns gradient.
virtual double	reducedGradient (ClpSimplex model, double region, bool useFeasibleCosts)
	Resize objective.
virtual double	stepLength (ClpSimplex model, const double solution, const double *change, double maximumTheta, double &currentObj, double &predictedObj, double &thetaObj)
	Returns step length which gives minimum of objective for solution + theta * change vector up to maximum theta.
virtual double	objectiveValue (const ClpSimplex model, const double solution) const
	Return objective value (without any ClpModel offset) (model may be NULL).
virtual void	resize (int newNumberColumns)
	Returns gradient.
virtual void	deleteSome (int numberToDelete, const int *which)
	Delete columns in objective.
virtual void	reallyScale (const double *columnScale)
	Scale objective.
virtual int	markNonlinear (char *which)
	Given a zeroed array sets nonlinear columns to 1.
Constructors and destructors

	ClpQuadraticObjective ()
	Default Constructor.
	ClpQuadraticObjective (const double linearObjective, int numberColumns, const CoinBigIndex start, const int column, const double element, int numberExtendedColumns_=-1)
	Constructor from objective.
	ClpQuadraticObjective (const ClpQuadraticObjective &rhs, int type=0)
	Copy constructor .
	ClpQuadraticObjective (const ClpQuadraticObjective &rhs, int numberColumns, const int *whichColumns)
	Subset constructor.
ClpQuadraticObjective &	operator= (const ClpQuadraticObjective &rhs)
	Assignment operator.
virtual	~ClpQuadraticObjective ()
	Destructor.
virtual ClpObjective *	clone () const
	Clone.
virtual ClpObjective *	subsetClone (int numberColumns, const int *whichColumns) const
	Subset clone.
void	loadQuadraticObjective (const int numberColumns, const CoinBigIndex start, const int column, const double *element, int numberExtendedColumns=-1)
	Load up quadratic objective.
void	loadQuadraticObjective (const CoinPackedMatrix &matrix)
	Default Constructor.
void	deleteQuadraticObjective ()
	Get rid of quadratic objective.
Gets and sets

CoinPackedMatrix *	quadraticObjective () const
	Quadratic objective.
double *	linearObjective () const
	Linear objective.
int	numberExtendedColumns () const
	Length of linear objective which could be bigger.
int	numberColumns () const
	Number of columns in quadratic objective.
bool	fullMatrix () const
	If a full or half matrix.
Private Attributes
Private member data
Quadratic objective
CoinPackedMatrix *	quadraticObjective_
	Objective.
double *	objective_
	Objective.
double *	gradient_
	Gradient.
int	numberColumns_
	Useful to have number of columns about.
int	numberExtendedColumns_
	Also length of linear objective which could be bigger.
bool	fullMatrix_
	True if full symmetric matrix, false if half.

Detailed Description

Quadratic Objective Class.

Definition at line 15 of file ClpQuadraticObjective.hpp.

Constructor & Destructor Documentation

ClpQuadraticObjective::ClpQuadraticObjective ( )

Default Constructor.

ClpQuadraticObjective::ClpQuadraticObjective	(	const double *	linearObjective,
		int	numberColumns,
		const CoinBigIndex *	start,
		const int *	column,
		const double *	element,
		int	numberExtendedColumns_ = `-1`
	)

Constructor from objective.

ClpQuadraticObjective::ClpQuadraticObjective	(	const ClpQuadraticObjective &	rhs,
		int	type = `0`
	)

Copy constructor .

If type is -1 then make sure half symmetric, if +1 then make sure full

ClpQuadraticObjective::ClpQuadraticObjective	(	const ClpQuadraticObjective &	rhs,
		int	numberColumns,
		const int *	whichColumns
	)

Subset constructor.

Duplicates are allowed and order is as given.

virtual ClpQuadraticObjective::~ClpQuadraticObjective ( ) [virtual]

Destructor.

Member Function Documentation

virtual double* ClpQuadraticObjective::gradient	(	const ClpSimplex *	model,
		const double *	solution,
		double &	offset,
		bool	refresh,
		int	includeLinear = `2`
	)			`[virtual]`

Returns gradient.

If Quadratic then solution may be NULL, also returns an offset (to be added to current one) If refresh is false then uses last solution Uses model for scaling includeLinear 0 - no, 1 as is, 2 as feasible

Implements ClpObjective.

virtual double ClpQuadraticObjective::reducedGradient	(	ClpSimplex *	model,
		double *	region,
		bool	useFeasibleCosts
	)			`[virtual]`

Resize objective.

Returns reduced gradient.Returns an offset (to be added to current one).

Implements ClpObjective.

virtual double ClpQuadraticObjective::stepLength	(	ClpSimplex *	model,
		const double *	solution,
		const double *	change,
		double	maximumTheta,
		double &	currentObj,
		double &	predictedObj,
		double &	thetaObj
	)			`[virtual]`

Returns step length which gives minimum of objective for solution + theta * change vector up to maximum theta.

arrays are numberColumns+numberRows Also sets current objective, predicted and at maximumTheta

Implements ClpObjective.

virtual double ClpQuadraticObjective::objectiveValue	(	const ClpSimplex *	model,
		const double *	solution
	)			const `[virtual]`

Return objective value (without any ClpModel offset) (model may be NULL).

Implements ClpObjective.

virtual void ClpQuadraticObjective::resize ( int newNumberColumns ) [virtual]

Returns gradient.

If Quadratic then solution may be NULL, also returns an offset (to be added to current one) If refresh is false then uses last solution Uses model for scaling includeLinear 0 - no, 1 as is, 2 as feasible

Implements ClpObjective.

virtual void ClpQuadraticObjective::deleteSome	(	int	numberToDelete,
		const int *	which
	)			`[virtual]`

Delete columns in objective.

Implements ClpObjective.

virtual void ClpQuadraticObjective::reallyScale ( const double * columnScale ) [virtual]

Scale objective.

Implements ClpObjective.

virtual int ClpQuadraticObjective::markNonlinear ( char * which ) [virtual]

Given a zeroed array sets nonlinear columns to 1.

Returns number of nonlinear columns

Reimplemented from ClpObjective.

ClpQuadraticObjective& ClpQuadraticObjective::operator= ( const ClpQuadraticObjective & rhs )

Assignment operator.

Reimplemented from ClpObjective.

virtual ClpObjective* ClpQuadraticObjective::clone ( ) const [virtual]

Clone.

Implements ClpObjective.

virtual ClpObjective* ClpQuadraticObjective::subsetClone	(	int	numberColumns,
		const int *	whichColumns
	)			const `[virtual]`

Subset clone.

Duplicates are allowed and order is as given.

Reimplemented from ClpObjective.

void ClpQuadraticObjective::loadQuadraticObjective	(	const int	numberColumns,
		const CoinBigIndex *	start,
		const int *	column,
		const double *	element,
		int	numberExtendedColumns = `-1`
	)